Annotation of src/usr.bin/tmux/cmd.c, Revision 1.37
1.37 ! nicm 1: /* $OpenBSD: cmd.c,v 1.36 2009/12/08 07:49:31 nicm Exp $ */
1.1 nicm 2:
3: /*
4: * Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
5: *
6: * Permission to use, copy, modify, and distribute this software for any
7: * purpose with or without fee is hereby granted, provided that the above
8: * copyright notice and this permission notice appear in all copies.
9: *
10: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14: * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
15: * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
16: * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17: */
18:
19: #include <sys/types.h>
20: #include <sys/time.h>
21:
1.5 nicm 22: #include <fnmatch.h>
23: #include <paths.h>
1.1 nicm 24: #include <stdlib.h>
25: #include <string.h>
26: #include <unistd.h>
27:
28: #include "tmux.h"
29:
30: const struct cmd_entry *cmd_table[] = {
31: &cmd_attach_session_entry,
32: &cmd_bind_key_entry,
33: &cmd_break_pane_entry,
1.34 nicm 34: &cmd_capture_pane_entry,
1.15 nicm 35: &cmd_choose_client_entry,
1.1 nicm 36: &cmd_choose_session_entry,
37: &cmd_choose_window_entry,
38: &cmd_clear_history_entry,
39: &cmd_clock_mode_entry,
40: &cmd_command_prompt_entry,
41: &cmd_confirm_before_entry,
42: &cmd_copy_buffer_entry,
43: &cmd_copy_mode_entry,
44: &cmd_delete_buffer_entry,
45: &cmd_detach_client_entry,
1.7 nicm 46: &cmd_display_message_entry,
1.16 nicm 47: &cmd_display_panes_entry,
1.1 nicm 48: &cmd_down_pane_entry,
49: &cmd_find_window_entry,
50: &cmd_has_session_entry,
1.4 nicm 51: &cmd_if_shell_entry,
1.37 ! nicm 52: &cmd_join_pane_entry,
1.1 nicm 53: &cmd_kill_pane_entry,
54: &cmd_kill_server_entry,
55: &cmd_kill_session_entry,
56: &cmd_kill_window_entry,
57: &cmd_last_window_entry,
58: &cmd_link_window_entry,
59: &cmd_list_buffers_entry,
60: &cmd_list_clients_entry,
61: &cmd_list_commands_entry,
62: &cmd_list_keys_entry,
1.23 nicm 63: &cmd_list_panes_entry,
1.1 nicm 64: &cmd_list_sessions_entry,
65: &cmd_list_windows_entry,
66: &cmd_load_buffer_entry,
1.19 nicm 67: &cmd_lock_client_entry,
1.1 nicm 68: &cmd_lock_server_entry,
1.19 nicm 69: &cmd_lock_session_entry,
1.1 nicm 70: &cmd_move_window_entry,
71: &cmd_new_session_entry,
72: &cmd_new_window_entry,
73: &cmd_next_layout_entry,
74: &cmd_next_window_entry,
75: &cmd_paste_buffer_entry,
1.24 nicm 76: &cmd_pipe_pane_entry,
1.1 nicm 77: &cmd_previous_layout_entry,
78: &cmd_previous_window_entry,
79: &cmd_refresh_client_entry,
80: &cmd_rename_session_entry,
81: &cmd_rename_window_entry,
82: &cmd_resize_pane_entry,
83: &cmd_respawn_window_entry,
84: &cmd_rotate_window_entry,
1.17 nicm 85: &cmd_run_shell_entry,
1.1 nicm 86: &cmd_save_buffer_entry,
87: &cmd_select_layout_entry,
88: &cmd_select_pane_entry,
89: &cmd_select_prompt_entry,
90: &cmd_select_window_entry,
91: &cmd_send_keys_entry,
92: &cmd_send_prefix_entry,
93: &cmd_server_info_entry,
94: &cmd_set_buffer_entry,
1.13 nicm 95: &cmd_set_environment_entry,
1.1 nicm 96: &cmd_set_option_entry,
97: &cmd_set_window_option_entry,
98: &cmd_show_buffer_entry,
1.13 nicm 99: &cmd_show_environment_entry,
1.32 nicm 100: &cmd_show_messages_entry,
1.1 nicm 101: &cmd_show_options_entry,
102: &cmd_show_window_options_entry,
103: &cmd_source_file_entry,
104: &cmd_split_window_entry,
105: &cmd_start_server_entry,
106: &cmd_suspend_client_entry,
107: &cmd_swap_pane_entry,
108: &cmd_swap_window_entry,
109: &cmd_switch_client_entry,
110: &cmd_unbind_key_entry,
111: &cmd_unlink_window_entry,
112: &cmd_up_pane_entry,
113: NULL
114: };
115:
1.31 nicm 116: struct session *cmd_choose_session(struct sessions *);
117: struct client *cmd_choose_client(struct clients *);
1.5 nicm 118: struct client *cmd_lookup_client(const char *);
119: struct session *cmd_lookup_session(const char *, int *);
120: struct winlink *cmd_lookup_window(struct session *, const char *, int *);
1.8 nicm 121: int cmd_lookup_index(struct session *, const char *, int *);
1.5 nicm 122:
1.10 nicm 123: int
124: cmd_pack_argv(int argc, char **argv, char *buf, size_t len)
125: {
126: size_t arglen;
127: int i;
128:
129: *buf = '\0';
130: for (i = 0; i < argc; i++) {
131: if (strlcpy(buf, argv[i], len) >= len)
132: return (-1);
133: arglen = strlen(argv[i]) + 1;
134: buf += arglen;
135: len -= arglen;
136: }
137:
138: return (0);
139: }
140:
141: int
142: cmd_unpack_argv(char *buf, size_t len, int argc, char ***argv)
143: {
144: int i;
145: size_t arglen;
146:
147: if (argc == 0)
148: return (0);
149: *argv = xcalloc(argc, sizeof **argv);
150:
151: buf[len - 1] = '\0';
152: for (i = 0; i < argc; i++) {
153: if (len == 0) {
154: cmd_free_argv(argc, *argv);
155: return (-1);
156: }
157:
158: arglen = strlen(buf) + 1;
159: (*argv)[i] = xstrdup(buf);
160: buf += arglen;
161: len -= arglen;
162: }
163:
164: return (0);
165: }
166:
167: void
168: cmd_free_argv(int argc, char **argv)
169: {
170: int i;
171:
172: if (argc == 0)
1.35 nicm 173: return;
1.10 nicm 174: for (i = 0; i < argc; i++) {
175: if (argv[i] != NULL)
176: xfree(argv[i]);
177: }
178: xfree(argv);
179: }
180:
1.1 nicm 181: struct cmd *
182: cmd_parse(int argc, char **argv, char **cause)
183: {
184: const struct cmd_entry **entryp, *entry;
1.27 deraadt 185: struct cmd *cmd;
1.1 nicm 186: char s[BUFSIZ];
1.3 nicm 187: int opt, ambiguous = 0;
1.1 nicm 188:
189: *cause = NULL;
1.2 nicm 190: if (argc == 0) {
191: xasprintf(cause, "no command");
1.1 nicm 192: return (NULL);
1.2 nicm 193: }
1.1 nicm 194:
195: entry = NULL;
196: for (entryp = cmd_table; *entryp != NULL; entryp++) {
197: if ((*entryp)->alias != NULL &&
198: strcmp((*entryp)->alias, argv[0]) == 0) {
1.3 nicm 199: ambiguous = 0;
1.1 nicm 200: entry = *entryp;
201: break;
202: }
203:
204: if (strncmp((*entryp)->name, argv[0], strlen(argv[0])) != 0)
205: continue;
206: if (entry != NULL)
1.3 nicm 207: ambiguous = 1;
1.1 nicm 208: entry = *entryp;
209:
210: /* Bail now if an exact match. */
211: if (strcmp(entry->name, argv[0]) == 0)
212: break;
213: }
1.3 nicm 214: if (ambiguous)
215: goto ambiguous;
1.1 nicm 216: if (entry == NULL) {
217: xasprintf(cause, "unknown command: %s", argv[0]);
218: return (NULL);
219: }
220:
221: optreset = 1;
222: optind = 1;
223: if (entry->parse == NULL) {
224: while ((opt = getopt(argc, argv, "")) != -1) {
225: switch (opt) {
226: default:
227: goto usage;
228: }
229: }
230: argc -= optind;
231: argv += optind;
232: if (argc != 0)
233: goto usage;
234: }
235:
236: cmd = xmalloc(sizeof *cmd);
237: cmd->entry = entry;
238: cmd->data = NULL;
239: if (entry->parse != NULL) {
240: if (entry->parse(cmd, argc, argv, cause) != 0) {
241: xfree(cmd);
242: return (NULL);
243: }
244: }
245: return (cmd);
246:
247: ambiguous:
248: *s = '\0';
249: for (entryp = cmd_table; *entryp != NULL; entryp++) {
250: if (strncmp((*entryp)->name, argv[0], strlen(argv[0])) != 0)
251: continue;
252: if (strlcat(s, (*entryp)->name, sizeof s) >= sizeof s)
253: break;
254: if (strlcat(s, ", ", sizeof s) >= sizeof s)
255: break;
256: }
257: s[strlen(s) - 2] = '\0';
258: xasprintf(cause, "ambiguous command: %s, could be: %s", argv[0], s);
259: return (NULL);
260:
261: usage:
262: xasprintf(cause, "usage: %s %s", entry->name, entry->usage);
263: return (NULL);
264: }
265:
266: int
267: cmd_exec(struct cmd *cmd, struct cmd_ctx *ctx)
268: {
269: return (cmd->entry->exec(cmd, ctx));
270: }
271:
272: void
273: cmd_free(struct cmd *cmd)
274: {
275: if (cmd->data != NULL && cmd->entry->free != NULL)
276: cmd->entry->free(cmd);
277: xfree(cmd);
278: }
279:
280: size_t
281: cmd_print(struct cmd *cmd, char *buf, size_t len)
282: {
1.33 nicm 283: if (cmd->entry->print == NULL)
1.1 nicm 284: return (xsnprintf(buf, len, "%s", cmd->entry->name));
285: return (cmd->entry->print(cmd, buf, len));
286: }
287:
1.5 nicm 288: /*
289: * Figure out the current session. Use: 1) the current session, if the command
1.31 nicm 290: * context has one; 2) the most recently used session containing the pty of the
291: * calling client, if any; 3) the session specified in the TMUX variable from
292: * the environment (as passed from the client); 4) the most recently used
293: * session from all sessions.
1.5 nicm 294: */
1.1 nicm 295: struct session *
296: cmd_current_session(struct cmd_ctx *ctx)
297: {
298: struct msg_command_data *data = ctx->msgdata;
1.11 nicm 299: struct client *c = ctx->cmdclient;
1.5 nicm 300: struct session *s;
1.11 nicm 301: struct sessions ss;
302: struct winlink *wl;
303: struct window_pane *wp;
304: u_int i;
305: int found;
1.1 nicm 306:
1.14 nicm 307: if (ctx->curclient != NULL && ctx->curclient->session != NULL)
308: return (ctx->curclient->session);
1.1 nicm 309:
1.11 nicm 310: /*
311: * If the name of the calling client's pty is know, build a list of the
312: * sessions that contain it and if any choose either the first or the
313: * newest.
314: */
315: if (c != NULL && c->tty.path != NULL) {
316: ARRAY_INIT(&ss);
317: for (i = 0; i < ARRAY_LENGTH(&sessions); i++) {
318: if ((s = ARRAY_ITEM(&sessions, i)) == NULL)
319: continue;
320: found = 0;
321: RB_FOREACH(wl, winlinks, &s->windows) {
322: TAILQ_FOREACH(wp, &wl->window->panes, entry) {
323: if (strcmp(wp->tty, c->tty.path) == 0) {
324: found = 1;
325: break;
326: }
327: }
328: if (found)
329: break;
330: }
331: if (found)
332: ARRAY_ADD(&ss, s);
333: }
334:
1.31 nicm 335: s = cmd_choose_session(&ss);
1.11 nicm 336: ARRAY_FREE(&ss);
337: if (s != NULL)
338: return (s);
339: }
340:
341: /* Use the session from the TMUX environment variable. */
1.1 nicm 342: if (data != NULL && data->pid != -1) {
1.5 nicm 343: if (data->pid != getpid())
1.1 nicm 344: return (NULL);
1.5 nicm 345: if (data->idx > ARRAY_LENGTH(&sessions))
1.1 nicm 346: return (NULL);
1.5 nicm 347: if ((s = ARRAY_ITEM(&sessions, data->idx)) == NULL)
1.1 nicm 348: return (NULL);
349: return (s);
350: }
351:
1.31 nicm 352: return (cmd_choose_session(&sessions));
1.5 nicm 353: }
354:
1.31 nicm 355: /* Find the most recently used session from a list. */
1.5 nicm 356: struct session *
1.31 nicm 357: cmd_choose_session(struct sessions *ss)
1.5 nicm 358: {
1.31 nicm 359: struct session *s, *sbest;
1.5 nicm 360: struct timeval *tv = NULL;
361: u_int i;
362:
1.31 nicm 363: sbest = NULL;
1.11 nicm 364: for (i = 0; i < ARRAY_LENGTH(ss); i++) {
365: if ((s = ARRAY_ITEM(ss, i)) == NULL)
1.5 nicm 366: continue;
367:
1.31 nicm 368: if (tv == NULL || timercmp(&s->activity_time, tv, >)) {
369: sbest = s;
370: tv = &s->activity_time;
1.1 nicm 371: }
372: }
1.5 nicm 373:
1.31 nicm 374: return (sbest);
1.1 nicm 375: }
376:
1.30 nicm 377: /*
378: * Find the current client. First try the current client if set, then pick the
1.31 nicm 379: * most recently used of the clients attached to the current session if any,
380: * then of all clients.
1.30 nicm 381: */
382: struct client *
383: cmd_current_client(struct cmd_ctx *ctx)
384: {
385: struct session *s;
386: struct client *c;
387: struct clients cc;
388: u_int i;
389:
390: if (ctx->curclient != NULL)
391: return (ctx->curclient);
392:
393: /*
394: * No current client set. Find the current session and return the
395: * newest of its clients.
396: */
397: s = cmd_current_session(ctx);
398: if (s != NULL && !(s->flags & SESSION_UNATTACHED)) {
399: ARRAY_INIT(&cc);
400: for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
401: if ((c = ARRAY_ITEM(&clients, i)) == NULL)
402: continue;
403: if (s == c->session)
404: ARRAY_ADD(&cc, c);
405: }
406:
1.31 nicm 407: c = cmd_choose_client(&cc);
1.30 nicm 408: ARRAY_FREE(&cc);
409: if (c != NULL)
410: return (c);
411: }
412:
1.31 nicm 413: return (cmd_choose_client(&clients));
1.30 nicm 414: }
415:
1.31 nicm 416: /* Choose the most recently used client from a list. */
1.20 nicm 417: struct client *
1.31 nicm 418: cmd_choose_client(struct clients *cc)
1.20 nicm 419: {
1.31 nicm 420: struct client *c, *cbest;
1.20 nicm 421: struct timeval *tv = NULL;
422: u_int i;
423:
1.31 nicm 424: cbest = NULL;
1.30 nicm 425: for (i = 0; i < ARRAY_LENGTH(cc); i++) {
426: if ((c = ARRAY_ITEM(cc, i)) == NULL)
1.20 nicm 427: continue;
428: if (c->session == NULL)
429: continue;
430:
1.31 nicm 431: if (tv == NULL || timercmp(&c->activity_time, tv, >)) {
432: cbest = c;
433: tv = &c->activity_time;
1.20 nicm 434: }
435: }
436:
1.31 nicm 437: return (cbest);
1.20 nicm 438: }
439:
1.5 nicm 440: /* Find the target client or report an error and return NULL. */
1.1 nicm 441: struct client *
442: cmd_find_client(struct cmd_ctx *ctx, const char *arg)
443: {
1.30 nicm 444: struct client *c;
1.5 nicm 445: char *tmparg;
446: size_t arglen;
1.1 nicm 447:
1.5 nicm 448: /* A NULL argument means the current client. */
1.30 nicm 449: if (arg == NULL)
450: return (cmd_current_client(ctx));
1.5 nicm 451: tmparg = xstrdup(arg);
452:
453: /* Trim a single trailing colon if any. */
454: arglen = strlen(tmparg);
455: if (arglen != 0 && tmparg[arglen - 1] == ':')
456: tmparg[arglen - 1] = '\0';
457:
458: /* Find the client, if any. */
459: c = cmd_lookup_client(tmparg);
460:
461: /* If no client found, report an error. */
462: if (c == NULL)
463: ctx->error(ctx, "client not found: %s", tmparg);
464:
465: xfree(tmparg);
466: return (c);
467: }
468:
469: /*
470: * Lookup a client by device path. Either of a full match and a match without a
471: * leading _PATH_DEV ("/dev/") is accepted.
472: */
473: struct client *
474: cmd_lookup_client(const char *name)
475: {
476: struct client *c;
477: const char *path;
478: u_int i;
479:
480: for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
1.25 nicm 481: c = ARRAY_ITEM(&clients, i);
482: if (c == NULL || c->session == NULL)
1.5 nicm 483: continue;
484: path = c->tty.path;
485:
486: /* Check for exact matches. */
487: if (strcmp(name, path) == 0)
488: return (c);
489:
490: /* Check without leading /dev if present. */
491: if (strncmp(path, _PATH_DEV, (sizeof _PATH_DEV) - 1) != 0)
492: continue;
493: if (strcmp(name, path + (sizeof _PATH_DEV) - 1) == 0)
494: return (c);
495: }
496:
497: return (NULL);
498: }
499:
500: /* Lookup a session by name. If no session is found, NULL is returned. */
501: struct session *
502: cmd_lookup_session(const char *name, int *ambiguous)
503: {
504: struct session *s, *sfound;
505: u_int i;
506:
507: *ambiguous = 0;
508:
509: /*
1.28 nicm 510: * Look for matches. First look for exact matches - session names must
511: * be unique so an exact match can't be ambigious and can just be
512: * returned.
1.5 nicm 513: */
1.35 nicm 514: for (i = 0; i < ARRAY_LENGTH(&sessions); i++) {
1.5 nicm 515: if ((s = ARRAY_ITEM(&sessions, i)) == NULL)
516: continue;
517: if (strcmp(name, s->name) == 0)
518: return (s);
1.28 nicm 519: }
520:
521: /*
522: * Otherwise look for partial matches, returning early if it is found to
523: * be ambiguous.
524: */
525: sfound = NULL;
1.35 nicm 526: for (i = 0; i < ARRAY_LENGTH(&sessions); i++) {
1.28 nicm 527: if ((s = ARRAY_ITEM(&sessions, i)) == NULL)
528: continue;
1.5 nicm 529: if (strncmp(name, s->name, strlen(name)) == 0 ||
530: fnmatch(name, s->name, 0) == 0) {
531: if (sfound != NULL) {
532: *ambiguous = 1;
533: return (NULL);
534: }
535: sfound = s;
536: }
537: }
1.35 nicm 538: return (sfound);
1.5 nicm 539: }
540:
541: /*
1.8 nicm 542: * Lookup a window or return -1 if not found or ambigious. First try as an
543: * index and if invalid, use fnmatch or leading prefix. Return NULL but fill in
544: * idx if the window index is a valid number but there is now window with that
545: * index.
1.5 nicm 546: */
547: struct winlink *
548: cmd_lookup_window(struct session *s, const char *name, int *ambiguous)
549: {
550: struct winlink *wl, *wlfound;
551: const char *errstr;
552: u_int idx;
553:
554: *ambiguous = 0;
555:
556: /* First see if this is a valid window index in this session. */
557: idx = strtonum(name, 0, INT_MAX, &errstr);
558: if (errstr == NULL) {
559: if ((wl = winlink_find_by_index(&s->windows, idx)) != NULL)
560: return (wl);
561: }
1.35 nicm 562:
1.5 nicm 563: /* Look for exact matches, error if more than one. */
564: wlfound = NULL;
565: RB_FOREACH(wl, winlinks, &s->windows) {
1.8 nicm 566: if (strcmp(name, wl->window->name) == 0) {
1.5 nicm 567: if (wlfound != NULL) {
568: *ambiguous = 1;
569: return (NULL);
570: }
571: wlfound = wl;
1.1 nicm 572: }
573: }
1.5 nicm 574: if (wlfound != NULL)
575: return (wlfound);
576:
577: /* Now look for pattern matches, again error if multiple. */
578: wlfound = NULL;
579: RB_FOREACH(wl, winlinks, &s->windows) {
1.8 nicm 580: if (strncmp(name, wl->window->name, strlen(name)) == 0 ||
581: fnmatch(name, wl->window->name, 0) == 0) {
1.5 nicm 582: if (wlfound != NULL) {
583: *ambiguous = 1;
584: return (NULL);
585: }
586: wlfound = wl;
587: }
1.35 nicm 588: }
1.5 nicm 589: if (wlfound != NULL)
590: return (wlfound);
591:
592: return (NULL);
1.1 nicm 593: }
594:
1.8 nicm 595: /*
596: * Find a window index - if the window doesn't exist, check if it is a
597: * potential index and return it anyway.
598: */
599: int
600: cmd_lookup_index(struct session *s, const char *name, int *ambiguous)
601: {
602: struct winlink *wl;
603: const char *errstr;
604: u_int idx;
605:
606: if ((wl = cmd_lookup_window(s, name, ambiguous)) != NULL)
607: return (wl->idx);
608: if (*ambiguous)
609: return (-1);
610:
611: idx = strtonum(name, 0, INT_MAX, &errstr);
612: if (errstr == NULL)
613: return (idx);
614:
615: return (-1);
616: }
617:
1.5 nicm 618: /* Find the target session or report an error and return NULL. */
1.1 nicm 619: struct session *
620: cmd_find_session(struct cmd_ctx *ctx, const char *arg)
621: {
622: struct session *s;
1.5 nicm 623: struct client *c;
624: char *tmparg;
625: size_t arglen;
626: int ambiguous;
1.1 nicm 627:
1.5 nicm 628: /* A NULL argument means the current session. */
1.1 nicm 629: if (arg == NULL)
1.5 nicm 630: return (cmd_current_session(ctx));
631: tmparg = xstrdup(arg);
632:
633: /* Trim a single trailing colon if any. */
634: arglen = strlen(tmparg);
635: if (arglen != 0 && tmparg[arglen - 1] == ':')
636: tmparg[arglen - 1] = '\0';
637:
638: /* Find the session, if any. */
639: s = cmd_lookup_session(tmparg, &ambiguous);
640:
641: /* If it doesn't, try to match it as a client. */
642: if (s == NULL && (c = cmd_lookup_client(tmparg)) != NULL)
643: s = c->session;
644:
645: /* If no session found, report an error. */
646: if (s == NULL) {
647: if (ambiguous)
648: ctx->error(ctx, "more than one session: %s", tmparg);
649: else
650: ctx->error(ctx, "session not found: %s", tmparg);
1.1 nicm 651: }
1.5 nicm 652:
653: xfree(tmparg);
1.1 nicm 654: return (s);
655: }
656:
1.5 nicm 657: /* Find the target session and window or report an error and return NULL. */
1.1 nicm 658: struct winlink *
659: cmd_find_window(struct cmd_ctx *ctx, const char *arg, struct session **sp)
660: {
661: struct session *s;
662: struct winlink *wl;
1.5 nicm 663: const char *winptr;
664: char *sessptr = NULL;
665: int ambiguous = 0;
666:
667: /*
668: * Find the current session. There must always be a current session, if
669: * it can't be found, report an error.
670: */
671: if ((s = cmd_current_session(ctx)) == NULL) {
672: ctx->error(ctx, "can't establish current session");
673: return (NULL);
674: }
675:
676: /* A NULL argument means the current session and window. */
677: if (arg == NULL) {
678: if (sp != NULL)
679: *sp = s;
680: return (s->curw);
681: }
682:
683: /* Time to look at the argument. If it is empty, that is an error. */
684: if (*arg == '\0')
685: goto not_found;
686:
1.8 nicm 687: /* Find the separating colon and split into window and session. */
1.5 nicm 688: winptr = strchr(arg, ':');
689: if (winptr == NULL)
1.8 nicm 690: goto no_colon;
691: winptr++; /* skip : */
692: sessptr = xstrdup(arg);
693: *strchr(sessptr, ':') = '\0';
1.5 nicm 694:
695: /* Try to lookup the session if present. */
1.8 nicm 696: if (*sessptr != '\0') {
697: if ((s = cmd_lookup_session(sessptr, &ambiguous)) == NULL)
1.5 nicm 698: goto no_session;
699: }
700: if (sp != NULL)
701: *sp = s;
702:
703: /*
704: * Then work out the window. An empty string is the current window,
705: * otherwise try to look it up in the session.
706: */
1.8 nicm 707: if (*winptr == '\0')
1.5 nicm 708: wl = s->curw;
709: else if ((wl = cmd_lookup_window(s, winptr, &ambiguous)) == NULL)
710: goto not_found;
1.35 nicm 711:
1.5 nicm 712: if (sessptr != NULL)
713: xfree(sessptr);
714: return (wl);
715:
1.8 nicm 716: no_colon:
717: /* No colon in the string, first try as a window then as a session. */
718: if ((wl = cmd_lookup_window(s, arg, &ambiguous)) == NULL) {
719: if (ambiguous)
720: goto not_found;
721: if ((s = cmd_lookup_session(arg, &ambiguous)) == NULL)
722: goto no_session;
723: wl = s->curw;
724: }
725:
726: if (sp != NULL)
727: *sp = s;
728:
729: return (wl);
730:
1.5 nicm 731: no_session:
732: if (ambiguous)
1.8 nicm 733: ctx->error(ctx, "multiple sessions: %s", arg);
1.5 nicm 734: else
1.8 nicm 735: ctx->error(ctx, "session not found: %s", arg);
1.5 nicm 736: if (sessptr != NULL)
737: xfree(sessptr);
738: return (NULL);
739:
740: not_found:
741: if (ambiguous)
742: ctx->error(ctx, "multiple windows: %s", arg);
743: else
744: ctx->error(ctx, "window not found: %s", arg);
745: if (sessptr != NULL)
746: xfree(sessptr);
747: return (NULL);
748: }
1.1 nicm 749:
1.5 nicm 750: /*
751: * Find the target session and window index, whether or not it exists in the
752: * session. Return -2 on error or -1 if no window index is specified. This is
1.8 nicm 753: * used when parsing an argument for a window target that may not exist (for
754: * example if it is going to be created).
1.5 nicm 755: */
756: int
757: cmd_find_index(struct cmd_ctx *ctx, const char *arg, struct session **sp)
758: {
759: struct session *s;
1.8 nicm 760: const char *winptr;
1.5 nicm 761: char *sessptr = NULL;
762: int idx, ambiguous = 0;
763:
764: /*
765: * Find the current session. There must always be a current session, if
766: * it can't be found, report an error.
767: */
768: if ((s = cmd_current_session(ctx)) == NULL) {
769: ctx->error(ctx, "can't establish current session");
1.9 nicm 770: return (-2);
1.1 nicm 771: }
1.5 nicm 772:
773: /* A NULL argument means the current session and "no window" (-1). */
774: if (arg == NULL) {
775: if (sp != NULL)
776: *sp = s;
777: return (-1);
778: }
779:
780: /* Time to look at the argument. If it is empty, that is an error. */
781: if (*arg == '\0')
782: goto not_found;
783:
784: /* Find the separating colon. If none, assume the current session. */
785: winptr = strchr(arg, ':');
786: if (winptr == NULL)
1.8 nicm 787: goto no_colon;
788: winptr++; /* skip : */
789: sessptr = xstrdup(arg);
790: *strchr(sessptr, ':') = '\0';
1.5 nicm 791:
792: /* Try to lookup the session if present. */
793: if (sessptr != NULL && *sessptr != '\0') {
1.8 nicm 794: if ((s = cmd_lookup_session(sessptr, &ambiguous)) == NULL)
1.5 nicm 795: goto no_session;
796: }
1.1 nicm 797: if (sp != NULL)
798: *sp = s;
799:
1.5 nicm 800: /*
1.8 nicm 801: * Then work out the window. An empty string is a new window otherwise
802: * try to look it up in the session.
1.5 nicm 803: */
1.8 nicm 804: if (*winptr == '\0')
805: idx = -1;
806: else if ((idx = cmd_lookup_index(s, winptr, &ambiguous)) == -1) {
1.5 nicm 807: if (ambiguous)
808: goto not_found;
1.8 nicm 809: ctx->error(ctx, "invalid index: %s", arg);
810: idx = -2;
811: }
1.35 nicm 812:
1.5 nicm 813: if (sessptr != NULL)
814: xfree(sessptr);
815: return (idx);
816:
1.8 nicm 817: no_colon:
818: /* No colon in the string, first try as a window then as a session. */
819: if ((idx = cmd_lookup_index(s, arg, &ambiguous)) == -1) {
820: if (ambiguous)
821: goto not_found;
822: if ((s = cmd_lookup_session(arg, &ambiguous)) == NULL)
823: goto no_session;
824: idx = -1;
825: }
826:
827: if (sp != NULL)
828: *sp = s;
829:
830: return (idx);
831:
1.5 nicm 832: no_session:
833: if (ambiguous)
1.35 nicm 834: ctx->error(ctx, "multiple sessions: %s", arg);
1.5 nicm 835: else
1.8 nicm 836: ctx->error(ctx, "session not found: %s", arg);
1.5 nicm 837: if (sessptr != NULL)
838: xfree(sessptr);
839: return (-2);
840:
841: not_found:
842: if (ambiguous)
843: ctx->error(ctx, "multiple windows: %s", arg);
1.1 nicm 844: else
1.5 nicm 845: ctx->error(ctx, "window not found: %s", arg);
846: if (sessptr != NULL)
847: xfree(sessptr);
848: return (-2);
1.12 nicm 849: }
850:
851: /*
852: * Find the target session, window and pane number or report an error and
853: * return NULL. The pane number is separated from the session:window by a .,
854: * such as mysession:mywindow.0.
855: */
856: struct winlink *
857: cmd_find_pane(struct cmd_ctx *ctx,
858: const char *arg, struct session **sp, struct window_pane **wpp)
859: {
1.36 nicm 860: struct session *s;
861: struct winlink *wl;
862: struct layout_cell *lc;
863: const char *period, *errstr;
864: char *winptr, *paneptr;
865: u_int idx;
1.12 nicm 866:
867: /* Get the current session. */
868: if ((s = cmd_current_session(ctx)) == NULL) {
1.27 deraadt 869: ctx->error(ctx, "can't establish current session");
1.12 nicm 870: return (NULL);
871: }
872: if (sp != NULL)
873: *sp = s;
874:
875: /* A NULL argument means the current session, window and pane. */
876: if (arg == NULL) {
877: *wpp = s->curw->window->active;
878: return (s->curw);
879: }
880:
881: /* Look for a separating period. */
882: if ((period = strrchr(arg, '.')) == NULL)
883: goto no_period;
884:
885: /* Pull out the window part and parse it. */
886: winptr = xstrdup(arg);
887: winptr[period - arg] = '\0';
888: if (*winptr == '\0')
889: wl = s->curw;
890: else if ((wl = cmd_find_window(ctx, winptr, sp)) == NULL)
891: goto error;
892:
893: /* Find the pane section and look it up. */
894: paneptr = winptr + (period - arg) + 1;
895: if (*paneptr == '\0')
896: *wpp = wl->window->active;
897: else {
898: idx = strtonum(paneptr, 0, INT_MAX, &errstr);
1.36 nicm 899: if (errstr != NULL)
900: goto lookup_string;
1.12 nicm 901: *wpp = window_pane_at_index(wl->window, idx);
1.36 nicm 902: if (*wpp == NULL)
903: goto lookup_string;
1.12 nicm 904: }
905:
906: xfree(winptr);
907: return (wl);
908:
1.36 nicm 909: lookup_string:
910: /* Try pane string description. */
911: if ((lc = layout_find_string(s->curw->window, paneptr)) == NULL) {
912: ctx->error(ctx, "can't find pane: %s", paneptr);
913: goto error;
914: }
915: *wpp = lc->wp;
916:
917: xfree(winptr);
918: return (s->curw);
919:
1.12 nicm 920: no_period:
921: /* Try as a pane number alone. */
922: idx = strtonum(arg, 0, INT_MAX, &errstr);
923: if (errstr != NULL)
924: goto lookup_window;
925:
926: /* Try index in the current session and window. */
927: if ((*wpp = window_pane_at_index(s->curw->window, idx)) == NULL)
928: goto lookup_window;
1.35 nicm 929:
1.12 nicm 930: return (s->curw);
931:
932: lookup_window:
1.36 nicm 933: /* Try pane string description. */
934: if ((lc = layout_find_string(s->curw->window, arg)) != NULL) {
935: *wpp = lc->wp;
936: return (s->curw);
937: }
938:
1.12 nicm 939: /* Try as a window and use the active pane. */
940: if ((wl = cmd_find_window(ctx, arg, sp)) != NULL)
941: *wpp = wl->window->active;
942: return (wl);
1.35 nicm 943:
1.12 nicm 944: error:
945: xfree(winptr);
946: return (NULL);
1.15 nicm 947: }
948:
949: /* Replace the first %% or %idx in template by s. */
950: char *
951: cmd_template_replace(char *template, const char *s, int idx)
952: {
953: char ch;
954: char *buf, *ptr;
955: int replaced;
956: size_t len;
957:
958: if (strstr(template, "%") == NULL)
959: return (xstrdup(template));
960:
961: buf = xmalloc(1);
962: *buf = '\0';
963: len = 0;
964: replaced = 0;
965:
966: ptr = template;
967: while (*ptr != '\0') {
968: switch (ch = *ptr++) {
969: case '%':
970: if (*ptr < '1' || *ptr > '9' || *ptr - '0' != idx) {
971: if (*ptr != '%' || replaced)
972: break;
973: replaced = 1;
974: }
975: ptr++;
976:
977: len += strlen(s);
978: buf = xrealloc(buf, 1, len + 1);
979: strlcat(buf, s, len + 1);
980: continue;
981: }
982: buf = xrealloc(buf, 1, len + 2);
983: buf[len++] = ch;
984: buf[len] = '\0';
985: }
986:
987: return (buf);
1.1 nicm 988: }
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